Carthach St., of Lismore, [195], [211], [233]
Carlingford Mountains, [49]
Carthain, St., [268]
Cas, ancestor of the Dalcassians, [62]
Castlepollard, [232]
Caseys, the, [32]
Cathba, or Cathbad, the druid, [96], [302], [314], [336], [344]
"Cathach" the, of the O'Donnells, [195], [268]
Cathbarr O'Donnell, [175]